89522181 has 24 divisors (see below), whose sum is σ = 148089344. Its totient is φ = 51049440.

The previous prime is 89522179. The next prime is 89522189. The reversal of 89522181 is 18122598.

It is not a de Polignac number, because 89522181 - 2¹ = 89522179 is a prime.

It is a super-3 number, since 3×89522181³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89522189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37071 + ... + 39411.

Almost surely, 2^89522181 is an apocalyptic number.

89522181 is the 5463-rd octagonal number.

It is an amenable number.

89522181 is a deficient number, since it is larger than the sum of its proper divisors (58567163).

89522181 is a wasteful number, since it uses less digits than its factorization.

89522181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961 (or 2958 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 89522181 is about 9461.6161938646. The cubic root of 89522181 is about 447.3459928000.

The spelling of 89522181 in words is "eighty-nine million, five hundred twenty-two thousand, one hundred eighty-one".